The present disclosure relates generally to antigen-binding proteins involved in immune function. More particularly, the present disclosure relates to recombinant antibodies, chimeric antigen receptors and fragments thereof with specificity for PD-1.本文所揭示的內容大體上係關於與免疫功能有關的抗原結合性蛋白質。更具體言之,本文所揭示的內容係關於對PD-1有專一性的重組抗體、嵌合性抗原受體與其片段。